EP 2716892 B1 20161130 - INTERNAL COMBUSTION ENGINE CONTROL APPARATUS
Title (en)
INTERNAL COMBUSTION ENGINE CONTROL APPARATUS
Title (de)
STEUERVORRICHTUNG FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
APPAREIL DE COMMANDE DE MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
JP 2011062672 W 20110602
Abstract (en)
[origin: EP2716892A1] A control apparatus according to an embodiment of the present invention comprises urea-SCR catalyst 44, a urea-water supply section 46, a low pressure gas recirculating section including a low pressure EGR pipe 61 forming a low pressure EGR passage and a low pressure EGR valve 62, and a control section. The control section controls, based on an engine operating parameter, "an amount of a fuel supplied to the engine, and an opening degree of the low pressure EGR valve." The control section supplies the urea-water to the urea-SCR catalyst in such a manner that ammonia of an amount required for reducing nitrogen oxides contained in an exhaust gas in the urea-SCR catalyst is produced in the urea-SCR catalyst (urea-water for reducing nitrogen oxides supply control). Further, the control section supplies the urea-water to the urea-SCR catalyst, the amount of the urea-water being larger than that of the urea-water for reducing nitrogen oxides supply control when an amount of an acid condensed water produced by a gas passing through the low pressure EGR passage is equal to or larger than an acid condensed water amount threshold (urea-water for producing ammonia supply control). This allows the ammonia flowing out from the urea-SCR catalyst to neutralize the acid condensed water.
IPC 8 full level
F02D 21/08 (2006.01); F01N 3/04 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01)
CPC (source: EP US)
F01N 3/18 (2013.01 - US); F01N 3/208 (2013.01 - EP US); F02D 21/08 (2013.01 - EP US); F02D 41/0055 (2013.01 - EP US); F02M 26/06 (2016.02 - EP US); F02M 26/15 (2016.02 - EP US); F02M 26/46 (2016.02 - EP US); F02M 26/47 (2016.02 - EP US); F01N 2900/1602 (2013.01 - EP US); F02B 29/0406 (2013.01 - EP US); F02M 26/05 (2016.02 - EP US); F02M 26/23 (2016.02 - EP US); F02M 26/50 (2016.02 - EP US); Y02T 10/12 (2013.01 - EP US); Y02T 10/40 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2716892 A1 20140409; EP 2716892 A4 20150311; EP 2716892 B1 20161130; CN 102918238 A 20130206; CN 102918238 B 20150902; JP 5170324 B2 20130327; JP WO2012164713 A1 20140731; US 2014130483 A1 20140515; US 9494066 B2 20161115; WO 2012164713 A1 20121206
DOCDB simple family (application)
EP 11866592 A 20110602; CN 201180017486 A 20110602; JP 2011062672 W 20110602; JP 2011548452 A 20110602; US 201114004065 A 20110602